Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2339754 A
Publication typeGrant
Publication dateJan 25, 1944
Filing dateMar 4, 1941
Priority dateMar 4, 1941
Publication numberUS 2339754 A, US 2339754A, US-A-2339754, US2339754 A, US2339754A
InventorsBrace Porter H
Original AssigneeWestinghouse Electric & Mfg Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Supervisory apparatus
US 2339754 A
Abstract  available in
Images(2)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Jan. 25, 1944. EH. BRACE S UPERVISORY APPARATUS Filed March 4, 1941 2 Sheets-Sheet 2 INVENTOR Porky/(Brace.

1 ATTORNE WITNESSES:

(W fir v Patented Jan. 25, 1944 UNITED STATES PATENT OFFICE- SUPERVISOR/Y APPARATUS Porter H. Brace, Forest Hills, Pa., assignor' to Westinghouse Electric & Manufacturing Company, East Pittsburgh, Pa., a corporation of Pennsylvania Application March 4, 1941, Serial No. 381,672

. 3 Claims.

This invention relates to devices useful for the control of metallurgical processes, and more particularly to supervisory apparatus for indicating the progress of chemical reactions due to combustion at high temperatures.

The primary object of this invention is to utilize the radiation properties accompanying combustion for indicating the progress of the combustion process.

Another object of the invention is to analyze the combustion process by means of the radiation such manner, as to produce an instantaneous visual indication proportional to the intensity of ance with the operation of the arrangement shown in Fig. 5.

In metallurgical operations involving accelerated oxidation reactions, for example, in combustion processes involving high temperatures, the radiations from the flames of gaseous or solid products are frequently depended upon as a.

means for estimating the progress of the reaction in order to decide upon the measures for controlling the process. For example, in producing steel by means of the Bessemer converter, it is the practice to depend upon the trained eye of the individual in charge of the control of the operation. Very accurate timing is necessary to main tain satisfactory uniformity in the product and the inevitable human error frequently leads to so-called off heats resulting in considerable economic losses. In accordance with the invention herein described a continuous indication can be efiected of the changing distribution of the radiation from the flame of a converter.

istics and spectral components of the radiation to be analyzed and proportional to the radiation of a standard source, and utilize said impulses in a predetermined order and sequence of time to form a pattern on the screen of a cathode ray oscilloscope.

Other objects and advantages will be apparent from the following description of the invention pointed out in particularity by the appended claims and taken in connection with the accompanying drawings in which:

Figure 1 is a schematic view of one embodiment of the invention for analyzing the general radiation of a flame;

Fig. 2 is a modified arrangement for analyzing the spectral radiation of a flame;

Fig. 3 shows the resultant pattern in accordance with the operation of the embodiment shown in Fig. 4 illustrates the pattern resultant from the operation of the arrangement of Fig. 2';

Fig. 5 is a schematic view of the apparatus for analyzing simultaneously the total radiation characteristics, the spectral radiation, and the rate of change of the radiation incident on a point of observation, e. g. a slit at the focus of the optical system cooperating with a photo-cell; and,

Fig. 6 illustrates the pattern obtained in accord- Referring to Fig. 1, a Bessemer converter I is schematically indicated, the flame of which emits visible, infrared and ultraviolet radiations. These radiations are passed through an optical system indicated by the lens 2 and through a suitable diaphragm 3 and are directed upon a second lens 4 which focuses the beam on a photo-cell 5. The anode and cathode elements 6 and 1, respectively of the cell 5 are connected to the vertical sweep circuit of'a cathode ray oscilloscope 21.

Oscilloscopes of this type are standard instruments for comparing variousproperties of alternating currents and serve as a useful tool in the 'fields of research and industry. The invention does. not concern itself with the particular type of oscilloscope and therefore its mechanical or electrical features need not be described in detail. It is to be understood that the oscilloscope contains elements for producing an adjustable linear time axis for the horizontal sweep of the cathode 4 ray and that the currents to be traced-cause vertical movement of the cathode ray.

A scanning mechanism comprising a series of alternating light filtering elements 8, and opaque members 9 is interposed between the diaphragm 3 and the lens 4. The filter members and the opaque members are so arranged as to form a revolving drum which may be rotated at a uniform speed by the motor Ill through suitable gearing. In order to synchronize the sweep of the oscilloscope with the rotation of the scanning mechanism, a small permanent magnet H is carried thereby and is arranged to cooperate with an inductance coil I? to deliver a voltage pulse to the sweep control of the oscilloscope on each revolution 01' the scanning mecha- The opaque members 9 acting as shutters for the light from the radiation of the flame, carry reflecting surfaces l3, which are at such an angle as to reflect upon the photo-cell 5 the radiation from a standard source shown here by the lamp I, the illumination of which is focused by means of the lens it upon the reflecting surfaces when one of them obstructs the opening of the diaphragm 3. The illumination is arranged by proper physical placement of the light source I in such manner that an opaque member 3 will cut of! the light beam when a filtering element 8 is directly opposite the opening of the diaphragm 3. The number of opaque members 9 around the circular support is so arranged that whenever a filtering element is placed directly opposite the opening in the diaphragm 3, an opaque member cuts oil the light from the source l4. On the other hand, whenever an opaque member 9 is directly opposite the opening in the diaphragm 3 and thereby cuts oil the light entering from the lens 2, a filtering element 8 will be so positioned that light from the source ll must pass therethrough. The light beam passing through the filter 8 being directed to the center 'of the opening in the diaphragm 3 encounters a reflector surface I 3 from which it is then reflected and directed through the lens onto the photocell 5. As the drum revolves .the next instant, a filtering member will take the place of the opaque member before the opening in the diaphragm 3, and at the same time an opaque member 9 will take the place of the filter member 8 before the lens l5 and thereby cut off the light from the source I. It is clearly seenv that in alternate succession the photocell will be energized from the light source to be analyzed and the standard source I4. Each-of the light filtering elements 8, has difierent predetermined spebtral transmittance and they are so arranged that as the scanning mechanism rotates each successive filter progressively completes the desired spectrum.

In the operation of the apparatus above described when the scanning mechanism is rotating the photo-cell receives interrupted illumination whose magnitudes depend upon the intensity of the radiation of the flame and the.

transmission coeflicients of the filters. The

photo-cell also receives a series of impulses origi nating from the standard source M in alternate succession. This results in a pattern on the oscilloscope screen I 6 as shown in Fig. 3 where the series of deflections N of the cathode ray beam differ in amplitude alternatingly from a series of deflections 0. The former are due to the energization of the photo-cell from the radiation source to be analyzed and the latter from the constant source M. For the purpose of comobtained through the use of suitable prisms or gratings to develop the line" spectrum of the radiation. By this is meant the successive viewing of the spectral lines of the flame as they are developed by a refracting prism, diffraction grating or equivalent optical element. A different type of scanning system is employed for this purpose as shown in Fig. 2. Radiation from the converter flame is focused on a slit 20 by a suitable optical system represented here by the lens 2|. The light is focused by another lens 22 upon a refracting prism 23, from which it is directed on the scanning mechanism 24. The latter con-- put of the latter is connected to the vertical deflecting circuit of a cathode ray-oscilloscope in the same manner as shown in Fig. 1. An amplifier l9 may be interposed between the photo cell 5 and the oscillograph 21 if the output of the photo-cell should not be of sufilcient ma nitude to energize the oscilloscope. The rotation of the scanning mechanism by the motor l0 causes the spectral radiation to sweep across the opening of the light gate 28 every time one of the reflecting surfaces 25 is in proper alignment therewith. Thus the radiation reaching the photo-cell varies with time during the movement of the spectrum across the opening of the light gate andin such a manner that it is dependent upon the spectral distribution of the radiation. The alternate reflectors 26 of thescanning mechanism are so positioned that they deflect the spectrum away from the light gate while reflecting the light from a standard source shown here by the lamp M in cooperation with the lens l5 upon the light gate as the scanning mechanism rotates.

The timing of the oscilloscope sweep is controlled as in Fig. 1 by a series of permanent magnets II and inductance i2 so that the oscilloscope sweep returns to its starting point after the passage of each pair of deflecting surfaces. The result is that the oscilloscope receives the series of impulses from the photo-cell evoked alternately by the light from the standard source and the radiation from the converter flame. The resultant pattern on the oscilloscope screen will be of the type shown in Fig.4 where the portion A represents a steady deflection due to the standard radiation and the portion B a variable defiec'tion due to the passage of successive spectral regions of the flame radiation across the light gate. In the operation the oscilloscope sensitivity is to be adjusted to keep the deflection due to the standard radiation at some predetermined parison the sensitivity of the oscilloscope may be adjusted by the control I! until the deflections due to the standard radiation reach some predetermined amplitude which is indicated by the mark Q. The standard source It mayconveniently be a tungsten filament lamp with means for accurately measuring and adjusting the filament current. The motor ill for driving the scanning mechanism should have a reasonably constant speed.

The above arrangement provides continuous spectral analysis of a chosen portion of the spectrum of a flame. Greater discrimination may be amplitude value as indicated by the mark (1" Itfrequently happens that significant lines of the spectrum are obscured by general radiation which gives a more or less continuou background of high intensity. Such radiation might arise from incandescent solid particles in suspension in the flame gases. In order to separate the lines from the continuous background, and provide a flexible arrangement in'which the general radia tion and the spectral lines can be simultaneously observed, together with some indication of the progress of reaction, the arrangement shown in. Fig. 5 can be utilized. By this modification 01.

tion ofthe total radiation from the flame as a' a 3. A third sweep records the rate of change of radiation reaching the photo-cell slit and thus serves to emphasize spectral lines with respect to the general background.

Radiation from the source shown herein as the flame of a Bessemer converter is focused by means of lens 2 on a spectroscom: I8 from which the dispersed light emerges and is directed upon a scanning mechanismcomprisin-g a polyhedral mirror 29 having two identical facets 39 and 30' and another facet 3i disposed in a different angular position; The mirror 29 is driven by a motor to by means of gears 34 and 35. The

and 4| are open. The output of the photo-cell will be connected directly through conductors 45 and 48, the stationary. contacts of the switch 43 and conductors 49 and 41 to the input of the oscilloscope.

The operation is repeated in uniform sequence, and the resultant pattern on the oscilloscope screen will be as shown in Fig. 6, comprising three distinctive cathode ray sweep lines, D being that gear drive is merely for the purpose of illustration and other suitable driving mechanisms may be employed. Another gear 36 similar in size to gear is in mesh with the latter and rotates a cam 31 upon which ride the rollers 38, 39 and 40 each actuating a switch 4|, 43 and 42, respectively. The moving contacts of the switches 4|.

- 42 and 43 are connected in parallel by means of conductors 45 and 49 and connect to the output of the photo-cell 5 through a suitable amplifier l9. The stationary contacts of th switches 4| and 43 are connected in parallel by means of conductors 41 and 48 and connect to the input circuit of the oscilloscope 21 and also to the secondary-winding 49 of a transformer 50 the primary winding 5! of which is connected to the stationary contacts of the switch 42.

The synchronization of the oscilloscope sweep is effected as previously described by means of magnets ll carried by the gear 35 cooperating with inductance coil 12. The facets 30 and 90' of the mirror 29 are so arranged that the light from the spectroscope I8 is reflected thereby upon the light gate behind which is the photocell 5, whereas the facet 3| is in such angular position that it reflects the light from the stand- .ard source l4 focused by the lens I! upon-the light gate 28.

The mirror 29 is so geared to the cam 31 that I the switches 4!, 42 and 43 are closed in succession during the intervals when the photo-cell is of the radiation of the standard source, E a record of the spectral lines of the general radiation, and F, a record of the rate of change of the radiation when the transformer is in operation.

I claim as my invention? 1. In an apparatus for determining the radiation characteristics of a radiant source, means for directing the radiation of said source upon a photoelectrically responsive element in periodic succession through a plurality of filters having predetermined spectral transmittance, means conjointly' operable with said directing means for exposing said element at intervals of said periodic succession to radiation of known value and means for indicating in visually comparative relation the magnitudes of the response of said element to both said radiations.

2. In an apparatus for determining the radi-- through said translucent members, a source of.

constant radiation of known value, means carried by said scanning mechanism and operable upon intervals at which time-said opaque members intercept the'radiation of said flrst mentioned source, for directing the radiation of said source of known value upon said element, and means for indicating in visually comparative relation the magnitudes of the response of said element to both said radiations.

3. In an apparatus for determining the process of combustion by means of. the radiation characteristics of the flame, a rotating scanningmechanism comprising a plurality of translucent and illuminated. In Fig. 5 the position illustrates the instant when the record of the general radiation of the flame is being indicated, the facet 30 sweeping over the light gate, andthe switch 4| being closed; with therotation as indicated by the arrow the next event will be the indicationof the spectral lines as distinguished from the general radiation; The radiation from the spectroscope will be reflected by thefacet 80' of the mirror 29 while the cam- 3'I will have closed the switch 42s0 that the impulse from the photo-* electric cell 5 will be transmitted to the cathode ray tube through the transformer B9. The transformer, due to its characteristics, will'develop signals which are proportional to the rate of change of the radiation at any instant rather than to its intensity. As the rotation continues the next occurrence is-tha't the facet Si is placed in operative relation between the light gate 20 and the source i4, sweeping the light gate by the standard radiation. At this time the switch 4! is in the closed position whereas switches 42 opaque members in alternate order upon a revolving support, a diaphragm cooperating therewith whereby the radiation of the flame is di-.

rected upon said mechanism, a photoelectric cell disposed behind said support and adapted to be energized by the light values transmitted through said translucent members and deenergized in successively alternate order by said opaque memberscovering saidodiaphragm, said translucent 'members' having progressively increasing spectral transmittance of predetermined light filtering value, a, source of constant radiation of known value, means including reflectors carried by said opaque members for directing the radiation of said source upon saidcell at intervals when said opaque members intercept the radia tion of said flame, and means for indicating the electrical eflect produced by said cell upon energization from both said radiations comprising a cathode ray oscilloscope.

PORTER H. BRA CE.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2444560 *Apr 15, 1944Jul 6, 1948Du Mont Allen B Lab IncCathode-ray tube spectrograph
US2602368 *Sep 13, 1950Jul 8, 1952Gen ElectricColor matching apparatus
US2648723 *Dec 30, 1948Aug 11, 1953Rca CorpInspection system
US2824972 *Apr 20, 1953Feb 25, 1958American Optical CorpSpectrographic apparatus
US2840146 *Oct 26, 1953Jun 24, 1958Gen Controls CoFlame detecting means
US2981062 *May 21, 1957Apr 25, 1961Arnoux CorpMethod and apparatus for safe operation of engines
US2991684 *Jul 31, 1956Jul 11, 1961Max Planck Inst EisenforschungMethod of supervising metallurgical and metal melting processes
US3087986 *Jul 8, 1958Apr 30, 1963IttOptical search system
US3121160 *Nov 13, 1961Feb 11, 1964Phillips Petroleum CoElectrical measuring apparatus
US3146822 *Sep 9, 1960Sep 1, 1964IttFlame detection system using oscillating element
US3198062 *May 12, 1960Aug 3, 1965Frederick G Keyes IncFlame photometers
US3219803 *Jan 8, 1962Nov 23, 1965Phillips Petroleum CoElectrical measuring apparatus
US3271558 *Feb 19, 1965Sep 6, 1966Davis Billy KSpectral method for monitoring atmospheric contamination of inert-gas welding shields
US3276506 *Jun 1, 1964Oct 4, 1966Apparatcbau Eugen Schrag KommaBurner control device
US4328488 *Dec 19, 1979May 4, 1982Tokyo Shibaura Denki Kabushiki KaishaFlame-detecting apparatus including a field-limiting device
US6788408 *Feb 4, 2003Sep 7, 2004Parviz TayebatiWavelength monitoring system
US6980299Oct 16, 2002Dec 27, 2005General Hospital CorporationSystems and methods for imaging a sample
US7148970Aug 25, 2005Dec 12, 2006The General Hospital CorporationSystems and methods for imaging a sample
US7231243Oct 30, 2001Jun 12, 2007The General Hospital CorporationOptical methods for tissue analysis
US7310150Jan 10, 2003Dec 18, 2007The General Hospital CorporationApparatus and method for low coherence ranging
US7355716Jan 24, 2003Apr 8, 2008The General Hospital CorporationApparatus and method for ranging and noise reduction of low coherence interferometry LCI and optical coherence tomography OCT signals by parallel detection of spectral bands
US7365859Sep 12, 2005Apr 29, 2008The General Hospital CorporationSystem and method for optical coherence imaging
US7366376Sep 29, 2005Apr 29, 2008The General Hospital CorporationSystem and method for optical coherence imaging
US7382949Nov 2, 2005Jun 3, 2008The General Hospital CorporationFiber-optic rotational device, optical system and method for imaging a sample
US7418169Feb 1, 2007Aug 26, 2008The General Hospital CorporationApparatus for controlling at least one of at least two sections of at least one fiber
US7447408Jul 1, 2005Nov 4, 2008The General Hospital CorproationImaging system and related techniques
US7519096Jun 4, 2004Apr 14, 2009The General Hospital CorporationProcess and apparatus for a wavelength tuning source
US7538859Feb 1, 2007May 26, 2009The General Hospital CorporationMethods and systems for monitoring and obtaining information of at least one portion of a sample using conformal laser therapy procedures, and providing electromagnetic radiation thereto
US7551293Nov 24, 2004Jun 23, 2009The General Hospital CorporationMethod and apparatus for three-dimensional spectrally encoded imaging
US7567349Mar 31, 2004Jul 28, 2009The General Hospital CorporationSpeckle reduction in optical coherence tomography by path length encoded angular compounding
US7630083Dec 13, 2007Dec 8, 2009The General Hospital CorporationApparatus and method for ranging and noise reduction of low coherence interferometry LCI and optical coherence tomography OCT signals by parallel detection of spectral bands
US7643152Dec 13, 2007Jan 5, 2010The General Hospital CorporationApparatus and method for ranging and noise reduction of low coherence interferometry LCI and optical coherence tomography OCT signals by parallel detection of spectral bands
US7643153Dec 13, 2007Jan 5, 2010The General Hospital CorporationApparatus and method for ranging and noise reduction of low coherence interferometry LCI and optical coherence tomography OCT signals by parallel detection of spectral bands
US7724786Apr 11, 2008May 25, 2010The General Hospital CorporationProcess and apparatus for a wavelength tuning source
US7733497Sep 8, 2004Jun 8, 2010The General Hospital CorporationMethod and apparatus for performing optical imaging using frequency-domain interferometry
US7742173Apr 5, 2007Jun 22, 2010The General Hospital CorporationMethods, arrangements and systems for polarization-sensitive optical frequency domain imaging of a sample
US7761139Jan 26, 2004Jul 20, 2010The General Hospital CorporationSystem and method for identifying tissue using low-coherence interferometry
US7782464May 4, 2007Aug 24, 2010The General Hospital CorporationProcesses, arrangements and systems for providing a fiber layer thickness map based on optical coherence tomography images
US7796270Jan 10, 2007Sep 14, 2010The General Hospital CorporationSystems and methods for generating data based on one or more spectrally-encoded endoscopy techniques
US7797119Dec 13, 2007Sep 14, 2010The General Hospital CorporationApparatus and method for rangings and noise reduction of low coherence interferometry LCI and optical coherence tomography OCT signals by parallel detection of spectral bands
US7809225Sep 5, 2008Oct 5, 2010The General Hospital CorporationImaging system and related techniques
US7809226Sep 5, 2008Oct 5, 2010The General Hospital CorporationImaging system and related techniques
US7843572Sep 29, 2006Nov 30, 2010The General Hospital CorporationMethod and apparatus for optical imaging via spectral encoding
US7847949Sep 29, 2006Dec 7, 2010The General Hospital CorporationMethod and apparatus for optical imaging via spectral encoding
US7859679May 31, 2006Dec 28, 2010The General Hospital CorporationSystem, method and arrangement which can use spectral encoding heterodyne interferometry techniques for imaging
US7865231May 1, 2002Jan 4, 2011The General Hospital CorporationMethod and apparatus for determination of atherosclerotic plaque type by measurement of tissue optical properties
US7872757Sep 30, 2009Jan 18, 2011The General Hospital CorporationApparatus and method for ranging and noise reduction of low coherence interferometry LCI and optical coherence tomography OCT signals by parallel detection of spectral bands
US7872759Sep 29, 2006Jan 18, 2011The General Hospital CorporationArrangements and methods for providing multimodality microscopic imaging of one or more biological structures
US7889348Oct 13, 2006Feb 15, 2011The General Hospital CorporationArrangements and methods for facilitating photoluminescence imaging
US7903257Dec 12, 2007Mar 8, 2011The General Hospital CorporationApparatus and method for ranging and noise reduction of low coherence interferometry (LCI) and optical coherence tomography (OCT) signals by parallel detection of spectral bands
US7911621Jan 18, 2008Mar 22, 2011The General Hospital CorporationApparatus and method for controlling ranging depth in optical frequency domain imaging
US7920271Aug 24, 2007Apr 5, 2011The General Hospital CorporationApparatus and methods for enhancing optical coherence tomography imaging using volumetric filtering techniques
US7925133Sep 5, 2008Apr 12, 2011The General Hospital CorporationImaging system and related techniques
US7933021Oct 30, 2008Apr 26, 2011The General Hospital CorporationSystem and method for cladding mode detection
US7949019Jan 17, 2008May 24, 2011The General HospitalWavelength tuning source based on a rotatable reflector
US7969578Jun 13, 2008Jun 28, 2011The General Hospital CorporationMethod and apparatus for performing optical imaging using frequency-domain interferometry
US7982879Feb 21, 2007Jul 19, 2011The General Hospital CorporationMethods and systems for performing angle-resolved fourier-domain optical coherence tomography
US7995210Nov 21, 2005Aug 9, 2011The General Hospital CorporationDevices and arrangements for performing coherence range imaging using a common path interferometer
US7995627Nov 30, 2009Aug 9, 2011The General Hospital CorporationProcess and apparatus for a wavelength tuning source
US8018598Jul 23, 2004Sep 13, 2011The General Hospital CorporationProcess, system and software arrangement for a chromatic dispersion compensation using reflective layers in optical coherence tomography (OCT) imaging
US8032200Sep 21, 2006Oct 4, 2011The General Hospital CorporationMethods and systems for tissue analysis
US8040608Aug 29, 2008Oct 18, 2011The General Hospital CorporationSystem and method for self-interference fluorescence microscopy, and computer-accessible medium associated therewith
US8045177Apr 17, 2008Oct 25, 2011The General Hospital CorporationApparatus and methods for measuring vibrations using spectrally-encoded endoscopy
US8050747Aug 8, 2008Nov 1, 2011The General Hospital CorporationMethod and apparatus for determination of atherosclerotic plaque type by measurement of tissue optical properties
US8054468Dec 13, 2007Nov 8, 2011The General Hospital CorporationApparatus and method for ranging and noise reduction of low coherence interferometry LCI and optical coherence tomography OCT signals by parallel detection of spectral bands
US8081316Aug 8, 2005Dec 20, 2011The General Hospital CorporationProcess, system and software arrangement for determining at least one location in a sample using an optical coherence tomography
US8097864Jan 26, 2010Jan 17, 2012The General Hospital CorporationSystem, method and computer-accessible medium for providing wide-field superresolution microscopy
US8115919May 2, 2008Feb 14, 2012The General Hospital CorporationMethods, arrangements and systems for obtaining information associated with a sample using optical microscopy
US8145018Jan 17, 2007Mar 27, 2012The General Hospital CorporationApparatus for obtaining information for a structure using spectrally-encoded endoscopy techniques and methods for producing one or more optical arrangements
US8149418Oct 22, 2010Apr 3, 2012The General Hospital CorporationMethod and apparatus for optical imaging via spectral encoding
US8150496Aug 8, 2008Apr 3, 2012The General Hospital CorporationMethod and apparatus for determination of atherosclerotic plaque type by measurement of tissue optical properties
US8174702Jul 27, 2009May 8, 2012The General Hospital CorporationSpeckle reduction in optical coherence tomography by path length encoded angular compounding
US8175685May 4, 2007May 8, 2012The General Hospital CorporationProcess, arrangements and systems for providing frequency domain imaging of a sample
US8208995Aug 24, 2005Jun 26, 2012The General Hospital CorporationMethod and apparatus for imaging of vessel segments
US8289522Nov 10, 2010Oct 16, 2012The General Hospital CorporationArrangements and methods for providing multimodality microscopic imaging of one or more biological structures
US8351665Apr 28, 2006Jan 8, 2013The General Hospital CorporationSystems, processes and software arrangements for evaluating information associated with an anatomical structure by an optical coherence ranging technique
US8355138Jul 27, 2011Jan 15, 2013The General Hospital CorporationMethod and apparatus for performing optical imaging using frequency-domain interferometry
US8369669Apr 11, 2011Feb 5, 2013The General Hospital CorporationImaging system and related techniques
US8384907Nov 15, 2010Feb 26, 2013The General Hospital CorporationMethod and apparatus for optical imaging via spectral encoding
US8384909Jun 7, 2010Feb 26, 2013The General Hospital CorporationMethod and apparatus for performing optical imaging using frequency-domain interferometry
US8416818Jun 14, 2011Apr 9, 2013The General Hospital CorporationProcess and apparatus for a wavelength tuning source
US8559012May 7, 2012Oct 15, 2013The General Hospital CorporationSpeckle reduction in optical coherence tomography by path length encoded angular compounding
US8593619May 7, 2009Nov 26, 2013The General Hospital CorporationSystem, method and computer-accessible medium for tracking vessel motion during three-dimensional coronary artery microscopy
US8676013Feb 4, 2013Mar 18, 2014The General Hospital CorporationImaging system using and related techniques
US8705046Dec 19, 2012Apr 22, 2014The General Hospital CorporationMethod and apparatus for performing optical imaging using frequency-domain interferometry
US8721077Apr 26, 2012May 13, 2014The General Hospital CorporationSystems, methods and computer-readable medium for determining depth-resolved physical and/or optical properties of scattering media by analyzing measured data over a range of depths
US8760663Apr 2, 2012Jun 24, 2014The General Hospital CorporationMethod and apparatus for optical imaging via spectral encoding
US8804126Mar 7, 2011Aug 12, 2014The General Hospital CorporationSystems, methods and computer-accessible medium which provide microscopic images of at least one anatomical structure at a particular resolution
US8818149Mar 22, 2012Aug 26, 2014The General Hospital CorporationSpectrally-encoded endoscopy techniques, apparatus and methods
US8838213Oct 19, 2007Sep 16, 2014The General Hospital CorporationApparatus and method for obtaining and providing imaging information associated with at least one portion of a sample, and effecting such portion(s)
US8861910Jun 19, 2009Oct 14, 2014The General Hospital CorporationFused fiber optic coupler arrangement and method for use thereof
US8896838Mar 7, 2011Nov 25, 2014The General Hospital CorporationSystems, methods and computer-accessible medium which provide microscopic images of at least one anatomical structure at a particular resolution
US8922781Nov 29, 2005Dec 30, 2014The General Hospital CorporationArrangements, devices, endoscopes, catheters and methods for performing optical imaging by simultaneously illuminating and detecting multiple points on a sample
US8928889Oct 8, 2012Jan 6, 2015The General Hospital CorporationArrangements and methods for providing multimodality microscopic imaging of one or more biological structures
US8937724Dec 10, 2009Jan 20, 2015The General Hospital CorporationSystems and methods for extending imaging depth range of optical coherence tomography through optical sub-sampling
US8965487Aug 24, 2005Feb 24, 2015The General Hospital CorporationProcess, system and software arrangement for measuring a mechanical strain and elastic properties of a sample
US9060689Jun 1, 2006Jun 23, 2015The General Hospital CorporationApparatus, method and system for performing phase-resolved optical frequency domain imaging
US9069130May 3, 2010Jun 30, 2015The General Hospital CorporationApparatus, method and system for generating optical radiation from biological gain media
US9081148Mar 7, 2011Jul 14, 2015The General Hospital CorporationSystems, methods and computer-accessible medium which provide microscopic images of at least one anatomical structure at a particular resolution
US9087368Jan 19, 2007Jul 21, 2015The General Hospital CorporationMethods and systems for optical imaging or epithelial luminal organs by beam scanning thereof
US9173572Nov 25, 2013Nov 3, 2015The General Hospital CorporationSystem, method and computer-accessible medium for tracking vessel motion during three-dimensional coronary artery microscopy
US9176319Mar 21, 2008Nov 3, 2015The General Hospital CorporationMethods, arrangements and apparatus for utilizing a wavelength-swept laser using angular scanning and dispersion procedures
US9178330Feb 4, 2010Nov 3, 2015The General Hospital CorporationApparatus and method for utilization of a high-speed optical wavelength tuning source
US9186066Feb 1, 2007Nov 17, 2015The General Hospital CorporationApparatus for applying a plurality of electro-magnetic radiations to a sample
US9186067May 24, 2013Nov 17, 2015The General Hospital CorporationApparatus for applying a plurality of electro-magnetic radiations to a sample
US9226660Nov 16, 2011Jan 5, 2016The General Hospital CorporationProcess, system and software arrangement for determining at least one location in a sample using an optical coherence tomography
US9226665May 23, 2013Jan 5, 2016The General Hospital CorporationSpeckle reduction in optical coherence tomography by path length encoded angular compounding
US9254089Jul 14, 2009Feb 9, 2016The General Hospital CorporationApparatus and methods for facilitating at least partial overlap of dispersed ration on at least one sample
US9254102Sep 6, 2011Feb 9, 2016The General Hospital CorporationMethod and apparatus for imaging of vessel segments
US9282931Oct 3, 2011Mar 15, 2016The General Hospital CorporationMethods for tissue analysis
US9295391Nov 10, 2000Mar 29, 2016The General Hospital CorporationSpectrally encoded miniature endoscopic imaging probe
US9304121Feb 22, 2013Apr 5, 2016The General Hospital CorporationMethod and apparatus for optical imaging via spectral encoding
US9326682Jan 7, 2013May 3, 2016The General Hospital CorporationSystems, processes and software arrangements for evaluating information associated with an anatomical structure by an optical coherence ranging technique
US9330092Jul 19, 2012May 3, 2016The General Hospital CorporationSystems, methods, apparatus and computer-accessible-medium for providing polarization-mode dispersion compensation in optical coherence tomography
US9332942Jan 28, 2008May 10, 2016The General Hospital CorporationSystems, processes and computer-accessible medium for providing hybrid flourescence and optical coherence tomography imaging
US9341783Oct 18, 2012May 17, 2016The General Hospital CorporationApparatus and methods for producing and/or providing recirculating optical delay(s)
US9351642Mar 12, 2010May 31, 2016The General Hospital CorporationNon-contact optical system, computer-accessible medium and method for measurement at least one mechanical property of tissue using coherent speckle technique(s)
US9364143May 7, 2012Jun 14, 2016The General Hospital CorporationProcess, arrangements and systems for providing frequency domain imaging of a sample
US9375158Jul 31, 2008Jun 28, 2016The General Hospital CorporationSystems and methods for providing beam scan patterns for high speed doppler optical frequency domain imaging
US9377290Apr 18, 2014Jun 28, 2016The General Hospital CorporationMethod and apparatus for performing optical imaging using frequency-domain interferometry
US9408539Mar 6, 2015Aug 9, 2016The General Hospital CorporationSystems, methods and computer-accessible medium which provide microscopic images of at least one anatomical structure at a particular resolution
US9415550Aug 21, 2013Aug 16, 2016The General Hospital CorporationSystem, method, and computer-accessible medium for fabrication miniature endoscope using soft lithography
US9441948Aug 9, 2006Sep 13, 2016The General Hospital CorporationApparatus, methods and storage medium for performing polarization-based quadrature demodulation in optical coherence tomography
US9510758Oct 27, 2011Dec 6, 2016The General Hospital CorporationApparatus, systems and methods for measuring blood pressure within at least one vessel
US9513276Jun 23, 2014Dec 6, 2016The General Hospital CorporationMethod and apparatus for optical imaging via spectral encoding
US9516997Aug 22, 2014Dec 13, 2016The General Hospital CorporationSpectrally-encoded endoscopy techniques, apparatus and methods
US9557154May 24, 2011Jan 31, 2017The General Hospital CorporationSystems, devices, methods, apparatus and computer-accessible media for providing optical imaging of structures and compositions
US9629528Mar 15, 2013Apr 25, 2017The General Hospital CorporationImaging system, method and distal attachment for multidirectional field of view endoscopy
US20020198457 *Apr 30, 2002Dec 26, 2002Tearney Guillermo J.Method and apparatus for improving image clarity and sensitivity in optical coherence tomography using dynamic feedback to control focal properties and coherence gating
US20030174327 *Feb 4, 2003Sep 18, 2003Parviz TayebatiWavelength monitoring system
US20050004453 *Jan 26, 2004Jan 6, 2005Tearney Guillermo J.System and method for identifying tissue using low-coherence interferometry
US20050018200 *Jan 10, 2003Jan 27, 2005Guillermo Tearney J.Apparatus for low coherence ranging
US20050018201 *Jan 24, 2003Jan 27, 2005De Boer Johannes FApparatus and method for ranging and noise reduction of low coherence interferometry lci and optical coherence tomography oct signals by parallel detection of spectral bands
US20050035295 *Jun 4, 2004Feb 17, 2005Brett BoumaProcess and apparatus for a wavelength tuning source
US20050128488 *Nov 24, 2004Jun 16, 2005Dvir YelinMethod and apparatus for three-dimensional spectrally encoded imaging
US20050280828 *Aug 25, 2005Dec 22, 2005The General Hospital CorporationSystems and methods for imaging a sample
US20060013544 *Jul 1, 2005Jan 19, 2006Bouma Brett EImaging system and related techniques
US20060055936 *Sep 12, 2005Mar 16, 2006The General Hospital CorporationSystem and method for optical coherence imaging
US20060058592 *Aug 24, 2005Mar 16, 2006The General Hospital CorporationProcess, system and software arrangement for measuring a mechanical strain and elastic properties of a sample
US20060058622 *Aug 24, 2005Mar 16, 2006The General Hospital CorporationMethod and apparatus for imaging of vessel segments
US20060067620 *Sep 29, 2005Mar 30, 2006The General Hospital CorporationSystem and method for optical coherence imaging
US20060093276 *Nov 2, 2005May 4, 2006The General Hospital CorporationFiber-optic rotational device, optical system and method for imaging a sample
US20060109478 *Nov 21, 2005May 25, 2006The General Hospital CorporationDevices and arrangements for performing coherence range imaging using a common path interferometer
US20060114473 *Nov 29, 2005Jun 1, 2006The General Hospital CorporationArrangements, devices, endoscopes, catheters and methods for performing optical imaging by simultaneously illuminating and detecting multiple points on a sample
US20060227333 *Mar 31, 2004Oct 12, 2006Tearney Guillermo JSpeckle reduction in optical coherence tomography by path length encoded angular compounding
US20060244973 *Sep 8, 2004Nov 2, 2006Seok-Hyun YunMethod and apparatus for performing optical imaging using frequency-domain interferometry
US20060270929 *May 31, 2006Nov 30, 2006The General Hospital CorporationSystem, method and arrangement which can use spectral encoding heterodyne interferometry techniques for imaging
US20060279742 *Jun 1, 2006Dec 14, 2006The General Hospital CorporationApparatus, method and system for performing phase-resolved optical frequency domain imaging
US20070009935 *May 15, 2006Jan 11, 2007The General Hospital CorporationArrangements, systems and methods capable of providing spectral-domain optical coherence reflectometry for a sensitive detection of chemical and biological sample
US20070012886 *Apr 28, 2006Jan 18, 2007The General Hospital CorporationSystems. processes and software arrangements for evaluating information associated with an anatomical structure by an optical coherence ranging technique
US20070035743 *Aug 9, 2006Feb 15, 2007The General Hospital CorporationApparatus, methods and storage medium for performing polarization-based quadrature demodulation in optical coherence tomography
US20070038040 *Apr 24, 2006Feb 15, 2007The General Hospital CorporationArrangements, systems and methods capable of providing spectral-domain polarization-sensitive optical coherence tomography
US20070049833 *Aug 16, 2006Mar 1, 2007The General Hospital CorporationArrangements and methods for imaging in vessels
US20070073162 *Sep 21, 2006Mar 29, 2007The General Hospital CorporationMethods and systems for tissue analysis
US20070081236 *Sep 29, 2006Apr 12, 2007The General Hospital CorporationMethod and apparatus for optical imaging via spectral encoding
US20070087445 *Oct 13, 2006Apr 19, 2007The General Hospital CorporationArrangements and methods for facilitating photoluminescence imaging
US20070121196 *Sep 29, 2006May 31, 2007The General Hospital CorporationMethod and apparatus for method for viewing and analyzing of one or more biological samples with progressively increasing resolutions
US20070171430 *Jan 18, 2007Jul 26, 2007The General Hospital CorporationSystems and methods for providing mirror tunnel micropscopy
US20070171433 *Jan 18, 2007Jul 26, 2007The General Hospital CorporationSystems and processes for providing endogenous molecular imaging with mid-infrared light
US20070179487 *Feb 1, 2007Aug 2, 2007The General Hospital CorporationApparatus for applying a plurality of electro-magnetic radiations to a sample
US20070188855 *Jan 17, 2007Aug 16, 2007The General Hospital CorporationApparatus for obtaining information for a structure using spectrally-encoded endoscopy teachniques and methods for producing one or more optical arrangements
US20070201033 *Feb 21, 2007Aug 30, 2007The General Hospital CorporationMethods and systems for performing angle-resolved fourier-domain optical coherence tomography
US20070208400 *Mar 1, 2007Sep 6, 2007The General Hospital CorporationSystem and method for providing cell specific laser therapy of atherosclerotic plaques by targeting light absorbers in macrophages
US20070223006 *Jan 18, 2007Sep 27, 2007The General Hospital CorporationSystems and methods for performing rapid fluorescence lifetime, excitation and emission spectral measurements
US20070229801 *Sep 29, 2006Oct 4, 2007The General Hospital CorporationArrangements and methods for providing multimodality microscopic imaging of one or more biological structures
US20070233396 *Sep 29, 2006Oct 4, 2007The General Hospital CorporationMethod and apparatus for optical imaging via spectral encoding
US20070236700 *Apr 5, 2007Oct 11, 2007The General Hospital CorporationMethods, arrangements and systems for polarization-sensitive optical frequency domain imaging of a sample
US20070239033 *Mar 16, 2007Oct 11, 2007The General Hospital CorporationArrangement, method and computer-accessible medium for identifying characteristics of at least a portion of a blood vessel contained within a tissue using spectral domain low coherence interferometry
US20070263227 *May 4, 2007Nov 15, 2007The General Hospital CorporationProcesses, arrangements and systems for providing a fiber layer thickness map based on optical coherence tomography images
US20070274650 *Feb 1, 2007Nov 29, 2007The General Hospital CorporationApparatus for controlling at least one of at least two sections of at least one fiber
US20070276269 *May 4, 2007Nov 29, 2007The General Hospital CorporationProcess, arrangements and systems for providing frequency domain imaging of a sample
US20070282403 *Feb 1, 2007Dec 6, 2007The General Hospital CorporationMethods and systems for providing electromagnetic radiation to at least one portion of a sample using conformal laser therapy procedures
US20080002211 *Jan 18, 2007Jan 3, 2008The General Hospital CorporationSystem, arrangement and process for providing speckle reductions using a wave front modulation for optical coherence tomography
US20080007734 *Oct 31, 2005Jan 10, 2008The General Hospital CorporationSystem and method for providing Jones matrix-based analysis to determine non-depolarizing polarization parameters using polarization-sensitive optical coherence tomography
US20080021275 *Jan 19, 2007Jan 24, 2008The General Hospital CorporationMethods and systems for optical imaging or epithelial luminal organs by beam scanning thereof
US20080049232 *Aug 24, 2007Feb 28, 2008The General Hospital CoporationApparatus and methods for enhancing optical coherence tomography imaging using volumetric filtering techniques
US20080094637 *Dec 13, 2007Apr 24, 2008The General Hospital CorporationApparatus and method for ranging and noise reduction of low coherence interferometry lci and optical coherence tomography oct signals by parallel detection of spectral bands
US20080097225 *Oct 19, 2007Apr 24, 2008The General Hospital CorporationApparatus and method for obtaining and providing imaging information associated with at least one portion of a sample, and effecting such portion(s)
US20080097709 *Dec 13, 2007Apr 24, 2008The General Hospital CorporationApparatus and method for rangings and noise reduction of low coherence interferometry lci and optical coherence tomography oct signals by parallel detection of spectral bands
US20080170225 *Dec 12, 2007Jul 17, 2008The General Hospital CorporationApparatus and method for ranging and noise reduction of low coherence interferometry lci and optical coherence tomography oct signals by parallel detection of spectral bands
US20080175280 *Jan 17, 2008Jul 24, 2008The General Hospital CorporationWavelength tuning source based on a rotatable reflector
US20080181263 *Apr 11, 2008Jul 31, 2008The General Hospital CorporationProcess and apparatus for a wavelength tuning source
US20080206804 *Jan 17, 2008Aug 28, 2008The General Hospital CorporationArrangements and methods for multidimensional multiplexed luminescence imaging and diagnosis
US20080232410 *Mar 21, 2008Sep 25, 2008The General Hospital CorporationMethods, arrangements and apparatus for utilizing a wavelength-swept laser using angular scanning and dispersion procedures
US20080234567 *Mar 19, 2008Sep 25, 2008The General Hospital CorporationApparatus and method for providing a noninvasive diagnosis of internal bleeding
US20080234586 *Mar 19, 2008Sep 25, 2008The General Hospital CorporationSystem and method for providing noninvasive diagnosis of compartment syndrome using exemplary laser speckle imaging procedure
US20080262314 *Apr 17, 2008Oct 23, 2008The General Hospital CorporationApparatus and methods for measuring vibrations using spectrally-encoded endoscopy
US20080262359 *Mar 28, 2008Oct 23, 2008The General Hospital CorporationSystem and method providing intracoronary laser speckle imaging for the detection of vulnerable plaque
US20080287808 *Sep 12, 2007Nov 20, 2008The General Hospital CorporationApparatus, probe and method for providing depth assessment in an anatomical structure
US20090003765 *Sep 5, 2008Jan 1, 2009The General Hospital CorporationImaging system and related techniques
US20090036770 *Aug 8, 2008Feb 5, 2009The General Hospital CorporationMethod and apparatus for determination of atherosclerotic plaque type by measurement of tissue optical properties
US20090036782 *Jul 31, 2008Feb 5, 2009The General Hospital CorporationSystems and methods for providing beam scan patterns for high speed doppler optical frequency domain imaging
US20090059360 *Aug 29, 2008Mar 5, 2009The General Hospital CorporationSystem and method for self-interference fluorescence microscopy, and computer-accessible medium associated therewith
US20090073439 *Sep 15, 2008Mar 19, 2009The General Hospital CorporationApparatus, computer-accessible medium and method for measuring chemical and/or molecular compositions of coronary atherosclerotic plaques in anatomical structures
US20090122302 *Oct 30, 2008May 14, 2009The General Hospital CorporationSystem and method for cladding mode detection
US20090131801 *Oct 13, 2008May 21, 2009The General Hospital CorporationSystems and processes for optical imaging of luminal anatomic structures
US20090192358 *Jan 28, 2008Jul 30, 2009The General Hospital CorporationSystems, processes and computer-accessible medium for providing hybrid flourescence and optical coherence tomography imaging
US20090225324 *Jan 20, 2009Sep 10, 2009The General Hospital CorporationApparatus for providing endoscopic high-speed optical coherence tomography
US20090323056 *May 2, 2008Dec 31, 2009The General Hospital CorporationMethods, arrangements and systems for obtaining information associated with a sample using optical microscopy
US20100094576 *Sep 30, 2009Apr 15, 2010The General Hospital CorporationApparatus and method for ranging and noise reduction of low coherence interferometry lci and optical coherence tomography oct signals by parallel detection of spectral bands
US20100110414 *May 7, 2009May 6, 2010The General Hospital CorporationSystem, method and computer-accessible medium for tracking vessel motion during three-dimensional coronary artery microscopy
US20100157309 *Jul 27, 2009Jun 24, 2010The General Hospital CorporationSpeckle reduction in optical coherence tomography by path length encoded angular compounding
US20100165335 *Jul 31, 2007Jul 1, 2010The General Hospital CorporationSystems and methods for receiving and/or analyzing information associated with electro-magnetic radiation
US20100207037 *Jan 26, 2010Aug 19, 2010The General Hospital CorporationSystem, method and computer-accessible medium for providing wide-field superresolution microscopy
US20100254415 *Feb 4, 2010Oct 7, 2010The General Hospital CorporationApparatus and method for utilization of a high-speed optical wavelength tuning source
US20100309477 *Jun 7, 2010Dec 9, 2010The General Hospital CorporationMethod and apparatus for performing optical imaging using frequency-domain interferometry
US20110092823 *Jul 19, 2010Apr 21, 2011The General Hospital CorporationSystem and Method for Identifying Tissue Using Low-Coherence Interferometry
US20110137178 *Oct 6, 2010Jun 9, 2011The General Hospital CorporationDevices and methods for imaging particular cells including eosinophils
US20110144504 *Nov 15, 2010Jun 16, 2011The General Hospital CorporationMethod and apparatus for optical imaging via spectral encoding
US20110149296 *Oct 22, 2010Jun 23, 2011The General Hospital CorporationMethod and apparatus for optical imaging via spectral encoding
US20110201924 *Jul 28, 2010Aug 18, 2011The General Hospital CorporationMethod and Apparatus for Improving Image Clarity and Sensitivity in Optical Tomography Using Dynamic Feedback to Control Focal Properties and Coherence Gating
US20110218403 *Mar 7, 2011Sep 8, 2011The General Hospital CorporationSystems, methods and computer-accessible medium which provide microscopic images of at least one anatomical structure at a particular resolution
US20110222563 *May 20, 2011Sep 15, 2011The General Hospital CorporationWavelength tuning source based on a rotatable reflector
US20110224541 *Dec 8, 2010Sep 15, 2011The General Hospital CorporationMethods and arrangements for analysis, diagnosis, and treatment monitoring of vocal folds by optical coherence tomography
US20110226940 *Jun 19, 2009Sep 22, 2011The General Hospital CorporationFused fiber optic coupler arrangement and method for use thereof
US20110237892 *Jul 14, 2009Sep 29, 2011The General Hospital CorporationApparatus and methods for color endoscopy
USRE43875Nov 25, 2008Dec 25, 2012The General Hospital CorporationSystem and method for optical coherence imaging
USRE44042Nov 24, 2008Mar 5, 2013The General Hospital CorporationSystem and method for optical coherence imaging
USRE45512Sep 12, 2012May 12, 2015The General Hospital CorporationSystem and method for optical coherence imaging
WO2002054027A1 *Dec 27, 2001Jul 11, 2002Coretek, Inc.Wavelength monitoring system
WO2005001401A2 *Jun 4, 2004Jan 6, 2005The General Hospital CorporationProcess and apparatus for a wavelength tuning source
WO2005001401A3 *Jun 4, 2004Apr 28, 2005Gen Hospital CorpProcess and apparatus for a wavelength tuning source
Classifications
U.S. Classification356/417, 356/308, 250/206, 250/226, 250/554